using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using Microsoft.Phone.Controls;
using Newtonsoft.Json;
using System.IO;
using System.IO.IsolatedStorage;
using Newtonsoft.Json.Linq;
using DatacronVideoGuide.ViewModels;
using Microsoft.Phone.Shell;
namespace DatacronVideoGuide
{
    public partial class MainPage : PhoneApplicationPage
    {
        // Constructor
        private static MainPage Instance;

        public MainPage()
        {
            InitializeComponent();
            Instance = this;

            // Set the data context of the listbox control to the sample data
            DataContext = App.ViewModel;
            this.Loaded += new RoutedEventHandler(MainPage_Loaded);
            
        }

        // Load data for the ViewModel Items
        private void MainPage_Loaded(object sender, RoutedEventArgs e)
        {
            if (!App.ViewModel.IsDataLoaded)
            {
                App.ViewModel.LoadData();

                updateLocalJson();

            }

            this.skills.ItemsSource = Skill.skillList;
           
            
            
        }
        //prende i dati da internet;da usare se si vuole aggiornare il json locale
        private void updateLocalJson() {
            var webClient = new WebClient();
            webClient.DownloadStringCompleted += new DownloadStringCompletedEventHandler(downloadStrinCompletedUpdate);


            webClient.DownloadStringAsync(new Uri("http://dl.dropbox.com/u/66864163/datacrons.json", UriKind.Absolute));
        
        }

        private void downloadStrinCompletedUpdate(Object sender, DownloadStringCompletedEventArgs e) {

            //errore di connessione
            if (e.Error != null)
            {

                if (checkFile("datacrons.json"))
                {
                    loadJson();
                    
                }
                else {
                    MessageBox.Show("You need Internet connection.");
                    App.Quit();
                }

            }
            else {

                try
                {
                    IsolatedStorageFile myIsolatedStorage = IsolatedStorageFile.GetUserStoreForApplication();
                    IsolatedStorageFileStream fileStream = myIsolatedStorage.OpenFile("datacrons.json", FileMode.OpenOrCreate, FileAccess.Write);
                    using (StreamWriter writer = new StreamWriter(fileStream))
                    {

                        writer.Write(e.Result);
                        writer.Close();
                    }
                    loadJson();
                }
                catch { 
                //mostrare errore
                
                }
            
            }
        }



        private void loadJson() { 
            
         

          
           try
            {
                IsolatedStorageFile isoStore = IsolatedStorageFile.GetUserStoreForApplication();

                StreamReader reader = new StreamReader(new IsolatedStorageFileStream("datacrons.json", FileMode.Open, isoStore));
                String result = reader.ReadToEnd();
                
                parseJson(result);
            }
            catch {
                /*var webClient = new WebClient();
                webClient.DownloadStringCompleted += new DownloadStringCompletedEventHandler(downloadStrinCompleted);


                webClient.DownloadStringAsync(new Uri("http://dl.dropbox.com/u/66864163/datacrons.json", UriKind.Absolute));*/
            
            }
            

            
            
          
        
        }



       private void parseJson(String jsonText){
            try
            {
                JsonTextReader jsReader = new JsonTextReader(new StringReader(jsonText));
                JObject jobj = JObject.Load(jsReader);
                var head = jobj.SelectToken("datacronMap");
                List<Planet> planets = new List<Planet>();
                Planet planet;

                foreach (var child in head.Children())
                {
                    planet = new Planet();

                    planet.parseJson(child);
                    planets.Add(planet);
                }
                this.Planets.ItemsSource = planets;

                List<Datacron> allDatacrons = new List<Datacron>();
                foreach (Planet p in planets)
                {
                    allDatacrons = allDatacrons.Concat(p.datacrons).ToList<Datacron>();
                }

                PhoneApplicationService.Current.State.Add("planets", planets);
                PhoneApplicationService.Current.State.Add("datacrons", allDatacrons);
                PhoneApplicationService.Current.State.Add("selectedPlanet", null);
                PhoneApplicationService.Current.State.Add("selectedDatacron", null);
                PhoneApplicationService.Current.State.Add("selectedSkill", null);

            }
            catch
            {}
        }

        private void Grid_Tap(object sender, System.Windows.Input.GestureEventArgs e)
        {
            if (this.Planets.SelectedItem!=null){
                PhoneApplicationService.Current.State["selectedPlanet"] = this.Planets.SelectedItem;
                NavigationService.Navigate(new Uri("/PlanetView.xaml", UriKind.Relative));
            }
            
        }

        public static MainPage getInstance() {
            return Instance;
        }

        private void PhoneApplicationPage_Loaded(object sender, RoutedEventArgs e)
        {

        }

        private void StackPanel_Tap(object sender, System.Windows.Input.GestureEventArgs e)
        {
            if (this.skills.SelectedItem != null) {
                PhoneApplicationService.Current.State["selectedSkill"] = this.skills.SelectedItem;
                NavigationService.Navigate(new Uri("/SkillView.xaml", UriKind.Relative));
            }
        }

        private void Grid_ManipulationStarted(object sender, ManipulationStartedEventArgs e)
        {   
            
                ((Planet)((Grid)sender).DataContext).opacity = Planet.maxOpacity;
            
        }

        private void Grid_ManipulationCompleted(object sender, ManipulationCompletedEventArgs e)
        {
            
                ((Planet)((Grid)sender).DataContext).opacity = Planet.minOpacity;
            
        }

        //controlla se esiste un determinato file o se non è aggiornato
        private bool checkFile(string filePath) {
            bool created = true;

            try
            {
                IsolatedStorageFile myIsolatedStorage = IsolatedStorageFile.GetUserStoreForApplication();
                IsolatedStorageFileStream fileStream = myIsolatedStorage.OpenFile(filePath, FileMode.Open, FileAccess.Read);
                fileStream.Close();
               

            }
            catch {
                created = false;
            }

            return created;
        
        }
    }
}